Slip sheeter, particularly adapted for mimeographs



Jue 17,- 1930.

8 Filed Feb. 18, 192

Patented June 17, 193i) Unirse s'rares PATENT orricl:

FREDERICK KLEIN, 0F NEW YORK, N. Y., ASSIGNOR T0 A. B. DICK COMPANY, .A CGR- PORATION OF ILLINOIS SLIP SHEETER, PARTICULARLY ADAPTED FOR MIIVIEOGRAPHS Application filed February 18, 1928. Serial No. 255,445.

rlhe invention relates to an improvement in slip-sheeters or interleaving' devices adapted for attachment to a duplicating machine, such as a mimeograph, for the purpose of interleaving the printed sheets delivered by the duplicating machine with blotters or separators to prevent the sinudging of the ink on the freshly printed sheets. I

The general object of the present invention is to produce a simple and eflicient slipsheeter or interleaving device of this character which will positively and accurately interleave the printed sheets with separators regardless of the speed at which the duplicating machine is operated. A more particular object of the invention is to arrange the parts of the interleaving` device so that it may be rendered inoperative, and then thrown into operation again, without disturbing its synchronism with the operation of the duplicating machine. Another object of the invention is to so arrange the parts of the interleaving device that it can be made to place a separator upon a freshly printed and Adelivered sheet at any predetermined time with respect to the delivery of the next printed sheet. interval after the delivery of the printed sheet before'the separator is placed thereon the operator 4is enabled to inspect the freshlyY delivered sheet to ascertain whether the printing has been properly done. Other and further objects of the invention will appear as the description proceeds. Vith these oljects in view the invention consists in the improved slip-sheeter or interleaving device 'fully described hereinafter and particularly lpointed out in the appended claims.

In the accompanying'drawings illustrating the preferred form of the invention'7 Fig. 1 `is a side elevation vof the improved slipsheeter or interleaving device showing its attachment to the delivery en d of a duplicating machine; Fig. 2 is a front elevation of the operating parts of the interle'avinfrl deviceV shown in Fig. 1;v and Figs. 3, 4, 5 and 6 are detail views in side elevation of the separator vdelivering device and the adjacent part of the separator magazine and showing progressively a complete cycle of the delivering de- Thus by allowing an appreciable transverse bars 4 which support the guides 5 held thereon by the bolts and wing nuts 6.

The operating parts of the improved interleaving device are supported from a frame comprising the upright bars 8 inturned at their lower ends and supported on a rod 9 mounted in the upturned rear Lends of the b ars 1. The horizontal bars 1 and the upright bars 8 are held inoperative relation with each other by means of the brace 10, the upper end of vwhich is mounted on a rod 11 passing through the lower ends of the bars 8 and the lower end of which is secured to one of the bars 1 by means of the screw 39. By removing the screwv39 the bars 1 and 8 and the parts carried by them may be folded together about the point 9.

On the pivot or cross rod 13 fixed in the upper ends of the vertical bars 8 is mounted a pivot member 12 supporting on its forward end the upper end of a magazine for the separators or slip-sheets. The normal posiltion of the magazine is indicated in Fig. 1

and comprises a rear wall 19, a bottom 3S secured tothe lower end of the rear wall 19 for supporting the separators by their lower edges` and two side walls 14 extending for- ,wardly from the rear `wall 19. On the rear end of the pivot member 12 are pivotally mountedtwo upright arms comprising the lever 15. Extending forward from the upper ends of the lever arms 15 is a wire 18 formed like a hairpin. The Wire 18is normally held against the upper end of the rear wall 19 of the magazine by means of a torsion spring 17 connected at one end with the pin'20inserted yin the pivot piece 12 and at its other l end with the pivot pin of a roll 16 mounted between the arms of the lever 15. The lower end of the magazine is yieldingly pressed forward (to hold the supply of separators in position to beengaged and delivered) by `means of the two springs 21 connected at their upper ends with' the pin 2O and at their lower ends with the pins 22 projecting rearwardly from a cross bar connecting the two upright bars 8. l/V hen it is desired tohold the supply of separators in the magazine out of range of the separator delivering device the lever is turned in a clockwise direction, viewing Fig.` 1, until the roll 16 is received within the recess 25 of a bracket :24 extending rearwardly from the cross piece 23 supported from the b ars 8. Y

The separator delivering device comprises a cylindrical gripping member or feeder tip 36 (preferably of rubber) mountedin the bifurcated outer end of a feed arm the split hub of which is adj ustably lfixed upon a shaft 27 journaled at one end in the upper end of the upright arm part 26 of a bracket supported. on extensions of the rods 9 and 11.

' At its other end the shaft 27 isjournaled in the upper end of the arm 31 of a bracketsupported on the rods 9 and 11. The shaft 27 is driveny from the duplicating machine by means of a chain 30 which passes over a sprocket wheel 29 xed on theouter end of the shaft 27. The hub of the sproeketi29 andthe collar 28 embracing the upper -end of the arm 26 onV opposite sides hold the shaft 27, against axial movement. l

AThe arm 31 is provided with a rearwardly extending hook-shaped part 32 and the arm 34 of abracket supported on the rods 9 and 11 is provided with a similar part. These two hook-shaped parts are located relatively close toyand on opposite sides of the separator delivering device and constitute stops. During the normal operation of the slipslieeter or interleaving device the springs 21 press the lower end of the magazine forwardly and hold the separators thereon yield-ingly against the rear ends of'thStOPs 38,2. The hub portions 3 3 of the-brackets of the arms 31 and 34C are formedas clamps engaging the rod 11 so that the hook-shaped stops 32 may be adjusted laterally with rrespect to the separator delivering device.'

To. load the magazine with a fresh supply of separators or to render the interleaving .device inoperative vfor any reason, thelever 15, ofV which the wire 18 is a convenient lllIlClle, is turneduntil the roll 16 is received in the .depression 25of the bracket 24. The springsw21 are strong enough to hold the roll 16 in the depression 25 and prevent the tor Sion spring.v 17 returning the lever 15 in the reverse direction.v The distance between the pivot lpoint of the roll 16 and the pivot point of the lever 15 is such that when the roll 16 in the depressen 25 thsrear Wall 1:9 of the i'nagazine is held substantially parallel with the upright bars 8. In this position of the magazine the separators are out of range of The separator delivering device operates.

to remove a separatorfrom the magazine and deliver it downwardly upon the pile of printed sheets supported between the guides 5 while the shaft 27 is passing through one complete rotation. The sweep or circular path described by the gripping member 36 extends routwardly beyond the hook-shaped stops 32. Consequently when the gripping member 36 encounters the outermost separator held against the rear ends of the stops 82'it pushes the bottom end of the magazine land the separators carried thereby rear-wardly7 as indicated in Fig. 1. As the gripping member moves upwardly it will tend -to lift the whole supply of separators, but will succeed` in lifting only the outermost one with which it is in contact. Y W'hen the gripping member passes beyond the Ahook-shaped upper sides of tlie'stops 32 and inwardly thereof the springs Y21 return the stack of separators into. vcontact with the rear ends of the stops. The gripping member lifts the outermost separator upwardly against the wire 18, the spring 17 yielding slightly. Consequently when the rotation of the shaft 27 disengages the gripping member from' the hook-'shaped stops 32, as indicatedin` rllie separator remains in this posi-Y Fio'. 5. tiozii until the gripping member on its next rotation encounters its rlowerredge. In this connection it will beV noted that the upper side of the gripping member is iiattenedf at an angle which enables it to pick up and re move. the separator supported on the stops 32, as indicated in Fig. 8. Asthe shaft 27 continues its rotation the lower end of the separator which has just been picked up from the stops 32 by the gripping member 36 slides along the iiattened part of theV arm aided therein by the act-ion of the spring 17, until the vlower forward. edge of the separator encounters andis held by a retaining member 37 secured to the arm 35 and 'forming an acute angle `with the flattened part thereof. As the shaft continues its rotation the gripping member 36Aengages with the rear side of the lower end`Y of the separator. as clearly indicated in Fig. 4, and since the lower edge of the separator rests upon the retaining member 37 the upper end of the separator is swung forwardly and downwardly upon the pile ofprinted retained between the guides 5. The separator is stripped or disengaged from the delivering device when the edge thereof held against the retaining member 37 is brought into contact with the forward edges of the bracket arms 3l and 34, as indicated in Fig. 6.

l.While the feed arm 35 and gripping member 36 were performing their second rotation to secure and deliver the first separator resting upon the hook-shaped stops 82 the gripping member 35 engaged the neXt separator, lifted it and permitted it to fall upon the stops The separator delivering de- 'ice now continues to operate in this manner until all the separators have been delivered, each separator being first lifted and deposited upon the hook-shaped stops 32 and then on the next succeeding rotation of the arm removed from the stops 32 and delivered to the pile of printed sheets.

lt will be understood that by loosening the hub part of the feed aim 35 and turning it about the shaft 27 and then securing it in an adjusted position, the separator delivering device may be caused to deposit a separator upon a freshly delivered printed sheet at any time preceding the delivery of the next succeeding printed sheet. separators in a substantially vertical position, gripping them at their lower ends and then positively forcing them downwardly onto the pile of printed sheets in timed relation with the delivery of the printed sheet-s, the separators interleaved between the printed sheets accurately irrespective of the speed at which the duplicating machine is delivering the printed sheets. The stiffness of the separators which are usually composed of straw or cardboard facilitates this inode of operation.

The slip-sheets or separators may be of any preferred size and shape to facilitate their oasv removal from the stack of printed The separators may conveniently be she-ets.

printed sheets, so that by holding the separatei-s by the ends and the printed sheets by the. sides the two may be readily separated. Having thus described the invention what l claim as new is:-

ing, means for .iolding a stack of separators By supporting the ,bstantially longer and narrower than the Y in upright position resting on one edge, a stop, means for yieldingly holding the stack of separators against the stop, means for engaging-the outermost separator to lift it as it pushes the stack outwardly from the stop,

said lifting means then releasing the separator to permit it to rest on the stop, and said lifting means again engaging the separator of separators against the stop, a rot-ating feed arm for engaging and lifting the outermost separator and then releasing it, said lifted and released separator being supported onthe stop, and said feed arm on its next rotation engaging the separator to deposit it upon the f delivered sheets. y

Il. A. device for inserting separators between successively delivered sheets comprising. a magazine pivoted at its upperend foi holding a stack of separators supported at f their lower edge, a stop, means for yieldingly forcing the lower end of the magazine toward the stop to hold the stack of separators in Contact therewith, and a rotating feed arm,

said feed arm on'one rotation'acting to engage i;

the outermost separator and lift it and then release it to permit it to be supported by the stop and on its next rotation acting to reengage the separator and deposit it upon the n delivered sheets.

5. ln a device for inserting separators between successively delivered sheets, means for supporting a stack of separators on one edge, and rotating means for engaging the outermost separator by its lower end and placing it on the delivered sheets, said rotating means being arranged to support the separator and impart a rotative movement thereto as it is placed on the delivered sheets.

6. A device for inserting separators be` outermost separator to lift it, and means foi` holding Vthe lifted separator, said lifting ineans then acting to engage the separator on its rear side and deposit it upon the delivered sheets. Y

7. A device for inserting separators between successively delivered sheets comprising, a magazine pivoted at its upper endfoi' holding a stack of separators supported at their lower edge, a stop, means for yieldingly forcing the lower end of the magazine toward the stop to hold the outermost separator in Contact therewith, a rotating feed arm for engaging and lifting the outermost separator and then releasing it, and means for forcing the lifted separator onto the stop, said feed lli) elf rlirawe arm on its next rotation acting to remove the. separator from the stop and deposit it upon the delivered sheets.- t I ,Y

y 8. A device for inserting separators beltween successively delivered sheets comprising, a magazine pivoted at its upper end for holding a stack of separators supported at their lower edge, a pair of hook-shaped stops, means for yield-ingly forcing the lower end of lo ythe magazine toward the rear ends of the stops to hold the lower end of the outermost A separator in contact therewith, a rotating feed arm operating between the stops, said feed arm acting to lift the outermost separa- 5 tor on one rotation, means for forcing the lifted separator onto the stops, and said feed arm acting on its next -rotation to remove the separator from the stops and deposit it upon the delivered sheets,

20 9. A device for inserting separators loetween successively7 delivered sheets comprising, armagazine pivoted at its upper ends for holding a stack of separators supported at their lower edge, a stop, means for yieldingly w45 forcingthe lower end of the magazine toward the stop, a constantly operating separator delivering means for engaging the outermost y separator and depositing it upon the delivered sheets, and means for holding the stack` of 30 separators outof the range of the separator delivering means.

10. A device for inserting separators bev tween successively delivered sheets comprising, an upright frame, a magazine pivoted at 35 the Lipper end of the frame for holding astaclr `of separators supported at their lower edge, a pair of stops, means for yieldingly forcing the lower end of the magazine toward the stops to hold the outermost separator in conm tact with the stops, la rotating feed arm operating'hetween the stops, said feed arm having a gripping member and a retaining member, v.said gripping member acting ,on one rotation of the feed arm to engage vand lift the 5 outermost separator, means for forcing the lifted separator downward onto the stops, said retaining member cooperating with the gripping member to engage the separator on f the next rotation of the arm to remove the 3 separator from the stops and deposit it upon the .delivered sheets, and means for swinging s y the magazine rearwardly to hold the separaP tors out'of range of the gripping member.'

Signed at College Point. in the county of Queens and State of New York. FREDERICK KLEIN. 

